142323531631205 has 32 divisors (see below), whose sum is σ = 172890431078400. Its totient is φ = 112460127639552.

The previous prime is 142323531631189. The next prime is 142323531631219. The reversal of 142323531631205 is 502136135323241.

It is a cyclic number.

It is not a de Polignac number, because 142323531631205 - 2⁴ = 142323531631189 is a prime.

It is a super-2 number, since 2×142323531631205² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2158771952 + ... + 2158837878.

It is an arithmetic number, because the mean of its divisors is an integer number (5402825971200).

Almost surely, 2^{142323531631205} is an apocalyptic number.

It is an amenable number.

142323531631205 is a deficient number, since it is larger than the sum of its proper divisors (30566899447195).

142323531631205 is a wasteful number, since it uses less digits than its factorization.

142323531631205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71093.

The product of its (nonzero) digits is 388800, while the sum is 41.

Adding to 142323531631205 its reverse (502136135323241), we get a palindrome (644459666954446).

The spelling of 142323531631205 in words is "one hundred forty-two trillion, three hundred twenty-three billion, five hundred thirty-one million, six hundred thirty-one thousand, two hundred five".